Passive frequency detection channel for a data retrieval system
阅读：697发布：2023-11-02
专利汇可以提供Passive frequency detection channel for a data retrieval system专利检索，专利查询，专利分析的服务。并且A passive frequency detection channel utilizing shared crystal resonators respectively coupled to opposite ends of a center tapped secondary transformer winding. The crystal resonators are coupled to a passive current summing network and envelope detector and post detection integrator by means of a shared resistor isolation network. Current summing is provided by the resistor isolation network while the envelope detector is comprised of one of a pair of Schottky barrier diodes commonly referred to as hot carrier diodes coupled between the isolation network and a post detection integrator comprising a parallel R-C circuit. Additionally the R-C circuit in combination with both diodes provides a low AC impedance to ground for the crystal resonators and isolation network which is essential for proper operation of the apparatus.，下面是Passive frequency detection channel for a data retrieval system专利的具体信息内容。
1. A frequency detection channel circuit adapted to be coupled to a source of electrical signal frequencies and being responsive to a selected frequency band thereof, comprising, in combination: input means coupled to said source of signal frequencies and providing a first and a second output signal substantially 180* out of phase with respect to each other; first frequency selective means including a pair of signal terminals and having a first predetermined frequency characteristic, coupled by means of one signal terminal to said input means and being responsive to said first output signal; second frequency selective means including a pair of signal terminals and having a second predetermined frequency characteristic similar to said first frequency characteristic but separated therefrom by a predetermined frequency separation coupled by means of one signal terminal to said input means and being responsive to said second output signal; first and second resistor means respectively coupling the other signal terminal of first and said second frequency selective means to a common circuit junction; first and second diode means, each having a pair of electrodes, and having mutually opposite electrodes thereof connected to said common circuit junction; a parallel resistance-capacitance combination comprising third resistor means and first capacitor means having one mutually common end coupled to the other electrode of said first diode mEans and the other mutually common end coupled to the other electrode of said second diode means; and output means coupled to said parallel resistance-capacitance combination, whereby said first diode means and said first capacitance means provides a first low AC impedance path for signals appearing at said common junction, said second diode means and said first capacitance means providing a second low AC impedance path for signals appearing at said common junction, said first diode means and said first capacitor means additionally providing envelope detection of said signals appearing at said common circuit junction, and said first diode means and said parallel resistance-capacitance combination providing post detection integration of said signals appearing at said common circuit junction.
2. The invention as claimed by claim 1 and additionally including fourth resistor means terminating said other signal terminal of said first frequency selective means to a point of reference potential and fifth resistor means terminating said other signal terminal of said second frequency selective means to said point of reference potential thereby balancing the output of said first and second frequency selective means.
3. The invention as defined by claim 2 wherein said first and second diode means comprises semiconductive diodes.
4. The invention as defined by claim 3 wherein said semiconductive diodes are comprised of Schottky barrier diodes.
5. The invention as defined by claim 4 wherein said first and second frequency selective means each comprises a resonator element.
6. The invention as defined by claim 5 wherein each said resonator element comprises a crystal filter resonator.
7. The invention as defined by claim 6 wherein said input means comprises a transformer having a primary winding and a secondary winding including a center tap connected to said point of reference potential and additionally including circuit means coupling one end of said secondary winding to said first crystal filter resonator and the other end of said secondary winding to said second crystal filter resonator.
8. The invention as defined by claim 1 and additionally including at least a third frequency selective means including a pair of signal terminals and having a third predetermined frequency characteristic similar to said first predetermined frequency characteristic but separated in frequency from said first and second frequency selective means by predetermined increments, coupled by means of one signal terminal to said input means and being responsive to one output signal thereof; fourth and fifth resistor means respectively coupling the other signal terminal of said second and third frequency selective means at a second common circuit junction; third and fourth diode means each having a pair of electrodes and having mutually opposite electrodes connected to said second common circuit junction; a second parallel resistance-capacitance combination comprising sixth resistor means and second capacitor means having mutually common ends respectively coupled to the other electrode of said first and second diode means; and second output means coupled to said second parallel resistance-capacitance combination whereby said second frequency selective means and said third frequency selective means provide a second frequency detection channel and whereby said second frequency selective means comprises a shared resonator element between said first and said second frequency detection channels.
9. The invention as defined by claim 8 and additionally including seventh resistor means coupled to and terminating the other signal terminal of said first frequency selective means to a point of reference potential, and eighth resistor means coupled to and terminating the other signal terminal of said third frequency selective means to said point of reference potential, thereby balancing the outputs of said first, second, and third frequency selective means.
10. The invention as defined by claim 9 wherein said input means comprises a transformer having a primary winding coupled to said source of signal frequencies and a secondary winding having a center tap connected to said point of reference potential and one end thereof provides said first output signal and the other end provides said second output signal.
11. The invention as defined by claim 10 wherein said first, second, third and fourth diode means comprises hot carrier diodes.
12. The invention as defined by claim 11 wherein said first, second, third frequency selective means comprises crystal resonators.
| 标题 | 发布/更新时间 | 阅读量 |
|---|---|---|
| 功率MOS晶体管内集成肖特基二极管的器件及制造方法 | 2021-08-21 | 0 |
| 具有静电放电损坏防护功能的高亮度发光二极管 | 2021-10-29 | 1 |
| 输配电杆塔防撞爆闪警示装置 | 2020-07-01 | 0 |
| 一种直流高压隔离检测方法 | 2020-10-26 | 1 |
| Voltage generating circuit using a Schottky barrier diode | 2022-09-22 | 0 |
| Semiconductor device and a method of manufacturing the same | 2021-12-02 | 2 |
| Manufacture of semiconductor device | 2022-10-13 | 0 |
| Method of fabricating a semiconductor device with Schottky barrier | 2022-08-03 | 3 |
| MULTI-FREQUENCY, MULTI-TARGET VEHICULAR RADAR SYSTEM USING DIGITAL SIGNAL PROCESSING | 2022-08-10 | 0 |
| 在共同基體上製造肖特基能障二極體及非晶形矽薄膜太陽電池之方法 | 2022-10-08 | 1 |
高效检索全球专利专利汇是专利免费检索,专利查询,专利分析-国家发明专利查询检索分析平台，是提供专利分析，专利查询，专利检索等数据服务功能的知识产权数据服务商。
我们的产品包含105个国家的1.26亿组数据，免费查、免费专利分析。
分析报告
专利汇分析报告产品可以对行业情报数据进行梳理分析，涉及维度包括行业专利基本状况分析、地域分析、技术分析、发明人分析、申请人分析、专利权人分析、失效分析、核心专利分析、法律分析、研发重点分析、企业专利处境分析、技术处境分析、专利寿命分析、企业定位分析、引证分析等超过60个分析角度，系统通过AI智能系统对图表进行解读，只需1分钟，一键生成行业专利分析报告。
肖特基二极管热门专利
QQ群二维码
意见反馈
意见反馈